我想编写一个用于 facebook 与 iOS 6 集成的单例。我使用社交和帐户框架。
这是我的 FacebookData.h ：
@class FacebookData;
@protocol FacebookDataDelegate <NSObject>
@optional
- (void)FacebookDataDidLoadRequest:(NSDictionary *)result;
- (void)FacebookDataDidFailToLoadRequest:(NSError *)error;
@end
@interface FacebookData : NSObject{
NSString *facebookAppID;
ACAccountStore *facebookAccountStore;
ACAccountType *facebookAccountType;
ACAccount *facebookAccount;
BOOL readPermissionsGranted;
BOOL RequestPermissionsGranted;
}
@property (nonatomic) id delegate;
+ (FacebookData*)sharedFacebookData;
- (void)setAppID:(NSString *)appID;
- (NSString *)currentAppID;
- (void)requestPermissions:(NSArray*)Permissions andLoadRequest:(NSString*)theRequest;
- (void)loadRequest:(NSString*)theRequest;
@end
我的 FacebookData.m 最重要的方法：
- (void)requestPermissions:(NSArray*)Permissions andLoadRequest:(NSString*)theRequest{
if(!readPermissionsGranted){
__block NSArray *facebookPermissions = @[@"read_stream", @"email"];
__block NSDictionary *facebookOptions = @{ ACFacebookAppIdKey : facebookAppID,
ACFacebookAudienceKey : ACFacebookAudienceFriends,
ACFacebookPermissionsKey : facebookPermissions};
[facebookAccountStore requestAccessToAccountsWithType:facebookAccountType options:facebookOptions completion:^(BOOL granted, NSError *error)
{
if (granted) {
readPermissionsGranted = YES;
[self requestPermissions:Permissions andLoadRequest:theRequest];
}
// If permission are not granted to read.
if (!granted)
{
NSLog(@"Read permission error: %@", [error localizedDescription]);
[self.delegate FacebookDataDidFailToLoadRequest:error];
readPermissionsGranted = NO;
if ([[error localizedDescription] isEqualToString:@"The operation couldn’t be completed. (com.apple.accounts error 6.)"])
{
[self performSelectorOnMainThread:@selector(showError) withObject:error waitUntilDone:NO];
}
}
}];
}else{
__block NSArray *facebookPermissions = [NSArray arrayWithArray:Permissions];
__block NSDictionary *facebookOptions = @{ ACFacebookAppIdKey : facebookAppID,
ACFacebookAudienceKey : ACFacebookAudienceFriends,
ACFacebookPermissionsKey : facebookPermissions};
[facebookAccountStore requestAccessToAccountsWithType:facebookAccountType options:facebookOptions completion:^(BOOL granted2, NSError *error)
{
if (granted2)
{
RequestPermissionsGranted = YES;
// Create the facebook account
facebookAccount = [[ACAccount alloc] initWithAccountType:facebookAccountType];
NSArray *arrayOfAccounts = [facebookAccountStore accountsWithAccountType:facebookAccountType];
facebookAccount = [arrayOfAccounts lastObject];
[self loadRequest:theRequest];
NSLog(@"Permission granted");
}
if (!granted2)
{
NSLog(@"Request permission error: %@", [error localizedDescription]);
[self.delegate FacebookDataDidFailToLoadRequest:error];
RequestPermissionsGranted = NO;
}
}];
}
}
- (void)loadRequest:(NSString*)theRequest{
__block NSDictionary *result= [[NSDictionary alloc]init];
// Create the URL to the end point
NSURL *theURL = [NSURL URLWithString:theRequest];
// Create the SLReqeust
SLRequest *slRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook requestMethod:SLRequestMethodGET URL:theURL parameters:nil];
// Set the account
[slRequest setAccount:facebookAccount];
// Perform the request
[slRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
if (error)
{
// If there is an error we populate the error string with error
__block NSString *errorString = [NSString stringWithFormat:@"%@", [error localizedDescription]];
NSLog(@"Error: %@", errorString);
[self.delegate FacebookDataDidFailToLoadRequest:error];
} else
{
NSLog(@"HTTP Response: %i", [urlResponse statusCode]);
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
result = jsonResponse;
[self.delegate FacebookDataDidLoadRequest:jsonResponse];
}
}];
}
我像这样使用这个单例：
FacebookData *data = [FacebookData sharedFacebookData];
data.delegate = self;
[data setAppID:APPIDKEY];
[data requestPermissions:@[@"friends_location"] andLoadRequest:@"https://graph.facebook.com/me/friends?fields=id,name,location"];
具有此权限的此请求失败，而具有权限的相同方法 :@[@"email"] 和请求：https://graph.facebook.com/me/friends完美运行。
这是我可以在控制台中看到的错误：
error = {
code = 2500;
message = "An active access token must be used to query information about the current user.";
type = OAuthException;
};
我找不到错误在哪里，我不知道如何在这些框架中使用令牌。
谢谢你的帮助 ！